Explain how vibrations from earthquakes may be used to study the core of the Earth – 8006

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1. Seismometers are used to detect seismic waves that travel through the Earth.

   Some seismic waves are longitudinal (P waves) and some are transverse (S waves).

   S waves cannot pass through liquid, but P waves can, which helps scientists understand the structure of the Earth.

   Waves get refracted as they travel through different layers, showing that the Earth has different densities inside.

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